International Journal of
Biodiversity and Conservation

  • Abbreviation: Int. J. Biodivers. Conserv.
  • Language: English
  • ISSN: 2141-243X
  • DOI: 10.5897/IJBC
  • Start Year: 2009
  • Published Articles: 678

Full Length Research Paper

Woody species diversity and important value indices in dense dry forests in Abdoulaye Wildlife Reserve (Togo, West Africa)

  Hodabalo Pereki1*, Kperkouma Wala1, Thomas Thiel-Clemen2, Michael P. Balinga Bessike3, Zida M.3, Marra Dourma1, Komlan Batawila1 and Koffi Akpagana1
  1Laboratory of Botany and Plant Ecology, Faculty of Sciences, University of Lome, P. O. Box: 1515 Lome, Togo. 2Faculty of Engineering and Computer Science, Hamburg University of Applied Sciences, Berliner Tor 7 20099 Hamburg, Germany. 3Center for International Forestry Research (CIFOR) - West Africa Regional Office (WARO), 06 P. O. Box 9478, Ouagadougou 06 Burkina Faso.
Email: [email protected].; [email protected]

  •  Accepted: 12 June 2013
  •  Published: 30 June 2013

Abstract

 

Dry forests are seriously under threats, mostly linked to human disturbance. In Togo where continuous deforestation is ongoing, it important to assess woody species diversity that maintain forest structure and functions. In that concern, this study was carried out in Abdoulaye Wildlife Reserve (AWR) with a specific objective to assess woody species diversity. A total of 258 plant species belonging to 119 genera and 63 families were found in AWR dry forests. Of this total, 67 woody species with 903 individuals and 52 genera were recorded. The highest relative frequencies were recorded byAnogeissus leiocarpa (83.37%), Pouteria alnifolia var. alnifolia (73.37%), Cola gigantea (50%),Diospyros mespiliformis (50%) and Dialium guineense (40%). The lianas species are dominated byRourea coccineaDioscorea dumetorumCissus populnea, Dioscorea burkilliana whereas the dominated herbaceous of the undergrowth layer were Anchomanes difformisChromolaena odorata,Olyra latifolia and Oplismenus hirtellus. Three stand groups were revealed and the study highlighted trees bushfire and breakage as main threats on species diversity. These human pressures were highest in GIII. Globally, Pielou’s index varied from 0.78 to 0.85. All these groups were dominated by A.leiocarpa. The study suggests conservation strategies to protect woody species against anthropogenic pressures (for example, protection from or reducing the frequency and/or intensity of disturbance, especially wood-cutting and bushfires).

 

Key words: Togo, biodiversity, woody species, sustainable management, dense dry forests.